kernel_samsung_sm7125

jenna

History

Andrew Lewis 03d70617b8 powerpc: Prevent memory corruption due to cache invalidation of unaligned DMA buffer On PowerPC processors with non-coherent cache architectures the DMA subsystem calls invalidate_dcache_range() before performing a DMA read operation. If the address and length of the DMA buffer are not aligned to a cache-line boundary this can result in memory outside of the DMA buffer being invalidated in the cache. If this memory has an uncommitted store then the data will be lost and a subsequent read of that address will result in an old value being returned from main memory. Only when the DMA buffer starts on a cache-line boundary and is an exact mutiple of the cache-line size can invalidate_dcache_range() be called, otherwise flush_dcache_range() must be called. flush_dcache_range() will first flush uncommitted writes, and then invalidate the cache. Signed-off-by: Andrew Lewis <andrew-lewis at netspace.net.au> Signed-off-by: Paul Mackerras <paulus@samba.org>		17 years ago
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boot	powerpc/bootwrapper: Pad .dtb by default	17 years ago
configs	Merge branch 'linux-2.6'	17 years ago
kernel	powerpc: Add VSX context save/restore, ptrace and signal support	17 years ago
kvm	KVM: ppc: Report bad GFNs	17 years ago
lib	powerpc: Prevent memory corruption due to cache invalidation of unaligned DMA buffer	17 years ago
math-emu	powerpc: Add macros to access floating point registers in thread_struct.	17 years ago
mm	powerpc: hash_huge_page() should get the WIMG bits from the lpte	17 years ago
oprofile	Merge branch 'linux-2.6'	17 years ago
platforms	powerpc: Add CONFIG_VSX config option	17 years ago
sysdev	Merge branch 'next' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx	17 years ago
xmon	Merge branch 'linux-2.6'	17 years ago
.gitignore	…
Kconfig	powerpc/sysdev: implement FSL GTM support	17 years ago
Kconfig.debug	powerpc: Add self-tests of the feature fixup code	17 years ago
Makefile	powerpc: Get rid of CROSS32{AS,LD,OBJCOPY}	17 years ago